Improvement in force-pumps



UNITED STATES PATENT OFFICE..

S.D. GILSON, OF SYRAOUSE, ASSIGNOR TO HIMSELF AND JOSEPH HALL, OFROCHESTER, NEW YORK.

IMPROVEMENT IN FORCE-PUMPS.

Specification forming part of Letters Patent No. 40,723, dated November24, 1863.

To all whom it may concern Be it known that I, S. D.'GILsoN, ofSyracuse, in the county of Onondaga and State of New York, have inventeda new and useful Improvement in force-pumps for feeding locomotive andother boilers, and .for other purposes; and I do hereby declare that thefollowing is a full, clear, and exact description of the same, referencebeing had to the accompanying drawings, forming partot' thisspeciiication, in which- Figure l is a central vertical section of thevalve-casing, valves, and parts of the barrel and inlet andlischarge-pipe connections of a pump, illustrating my invention. Fig. 2is a horizontal section of the valve-chamber.

Similar letters of reference indicate corresponding parts in bothiigures.

The principal object of my invention is to provide for the speedyremoval and replacement of the valves of a locomotive or otherforce-pump; and it consists in a certain construction of thevalve-casing and mode ot' applying the same in the pump, and in acertainarrangement of the valves within the casing, whereby the above result isobtained.

'lo enable others skilled in the art to make and use my invention, Iwill proceed to describe its construction and operation.

A is the pump-barrel, enlarged at its ein] in conical form, as shown atA A, for the re- Y ception ofthe valve-casing B, which is inserted in ahorizontal direction land made to produce a tightjoint, as shown at a a,by turning and boring, either with or Without grinding.

O is a cap-piece, screwed into or otherwise secured to the mouth ot' AlA', to coniinethe casing B in place, and having the said casing attachedto it by a stout screw-bolt, D, which enables the said casing to beremoved with it, but permits the cap-piece to turn without the saidcasing in screwing the said piece in or out.

The casing B has cast 'n it, or otherwise secured within it, acylindrical cage,`G, the axis of which intersects the horizontal axis ofthe vacuum valve E, formed around the lower part of the` interior of thecage G below its openings g g, which are arranged all aroun'l it atequaldista-nces apart. f is the seat for the conica] eduction ordischarge valve F, formed around the top of the cage G. The valves bothopen upward, and the valve E. has its stem4 e fitted into a cylindricalcavity, f', bored in the valve F, so that each valve forms a guide tothe other one, and the valve F forms a'stop or guard to the valve E. y

c is a iixed stop or guard, provided in A A for the valve F. lheinduction or suction pipe connelction H is formed directly below thevalve E, and the eduction or discharge pipe connection I is directlyabove the valve F.

The operation of the valves is as follows: When, by the action of thepump-plunger, the valve E is opened, the water rushes up into the cageG, and thence through the openings a g in' 'the' sides of the cage intothe surrounding space h, within the casing B,and into the barrel,asindicated by black arrows in Fig. l. When the plunger returns, and thevalve E is thereby closed and the valve F is opened, the water passesback through the openingsg g into the cage and thence up to thedischargepipe las indicated by red arrows in Fig. l.

What I claim as my invention, and desire to secure by Letters Patent,is-

l. The arrangement ofthe two valves E l Fina cage, G, so that the wateris both taken into the pump and vdischarged therefrom through the saidcage, substantially as and for the purpose herein specied.

2. The arrangement ofthe cage G in a casing, B, which is inserted intoand removed from its place in a direction at right angles to the a-xisot' the cage and to the movement of the valves, substantially as hereindescribed.

3. In combination with the arrangement of the two valves and valve-seatsin the" cage, the fitting of the valves, one within the other, in suchmanner that 'each constitutes a guide for the other within the cage,substantially as herein specified.

4. The attachmenty of thevalve-casing to the cap C by a screw-bolt, D,or its equivalent, to allow the said casing to be withdrawn with thecap, substantially as herein set forth.

' S. D. GILSON.

Witnesses:

DYER WILLIAMs, E. P. HAsBEoUcK.

